McMahan
McMahan is a surname of Irish origin, a variant of McMahon. It derives from the Gaelic Mac Mathghamhain, meaning “son of Mathgamain,” a personal name associated with medieval rulers in the Munster region. The spelling McMahan reflects regional pronunciation and the broader pattern of anglicization that affected Gaelic names during the dispersion of Irish families.
Distribution and migration have carried the name beyond Ireland. The form has become established in Scotland,
Variants and related names include MacMahon and McMahon, among others. Differences in spelling often result from
Usage and presence: McMahan appears in genealogical, historical, and archival contexts, reflecting the lineage of families